Like I said , mine just cured itself . I could have the CC set , green light on the dash but the steering wheel buttons wouldn't function.I took off each rear light cluster , one at once and pressed the brake pedal. It turned out it was the offside light that was causing the fog light dash sumbol to flcker very faintly . The only thing was , all the pins were like new , no corrosion whatsoever. So that kinda ruled that out . I thought maybe it was moisture , so i dried out all the connectors with a hair dryer and put on some electrical conductive grease , which worked for a while . Mine still flickers , more so when its damp / raining . I also read somewhere on CS about a black earth wire going from the light cluster to the bodywork . But i never investigated further . It's quite a common problem by all accounts if you search for fog lights flickering .